20778352

素因数分解:

$2^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1559}}^1$

素因数の和:1598

約数の個数: 60

約数和(自身を含む): 49617360

約数和(自身を除く): 28839008

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 49, 56, 68, 98, 112, 119, 136, 196, 238, 272, 392, 476, 784, 833, 952, 1559, 1666, 1904, 3118, 3332, 6236, 6664, 10913, 12472, 13328, 21826, 24944, 26503, 43652, 53006, 76391, 87304, 106012, 152782, 174608, 185521, 212024, 305564, 371042, 424048, 611128, 742084, 1222256, 1298647, 1484168, 2597294, 2968336, 5194588, 10389176, 20778352]

約数ペア:

[(1, 20778352), (2, 10389176), (4, 5194588), (7, 2968336), (8, 2597294), (14, 1484168), (16, 1298647), (17, 1222256), (28, 742084), (34, 611128), (49, 424048), (56, 371042), (68, 305564), (98, 212024), (112, 185521), (119, 174608), (136, 152782), (196, 106012), (238, 87304), (272, 76391), (392, 53006), (476, 43652), (784, 26503), (833, 24944), (952, 21826), (1559, 13328), (1666, 12472), (1904, 10913), (3118, 6664), (3332, 6236)]